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Which of the following pairs of atomic n...

Which of the following pairs of atomic numbers represent elements belonging to the same group

A

11 and 20

B

12 and 30

C

13 and 31

D

14 and 33

Text Solution

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The correct Answer is:
C
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  8. In genral outer electronic configuration of the elements of group ViB ...

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  9. What is the group no.of an element having atomic no.105?

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  10. Which of the following ionic radius would be maximum?

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  11. The decreasing order of size of the following ions is

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  12. Na+,Mg^(++),Al^(+3),Si^(+4) are isoelectronics the order of their ioni...

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  13. The covalent and van der waals radii of hydrogen respectively are

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  14. which ion possessses the smallest radius?

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  16. The first ionization potential in electron volts of nitrogen and oxyge...

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  17. The first ionization potential of Na,Mg,Al and Si are in the order

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  18. The correct order of decreasing first ionization energy is

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